User Manual MDx-AC-xxxDT-10.31
Page 7 of 12 www.hanbayinc.com | 1 800 315 4461
Rev.2021.6 hanbaysales@hanbayinc.com
4-pos Functionality (DIP 8 ON)
Direction of rotation and using input 1
To change the direction of rotation on the actuator change the setting on DIP 12 and cycle power to the
actuator. VERY IMPORTANT: Input 1 must always be used if only one input is used to operate the
valve. When the actuator is operated using input 1 an automatic calibration is done every
time the valve is actuated. This does not happen on input 2.
Calibration
The center position calibration routine can be initiated by switching DIP 9 momentarily “off” then “on”. This
will cause the actuator to go through a series of movements to determine the proper center position. This
function is useful if the actuator’s output gear gets manually rotated while the actuator is powered down and
can’t properly realign to the center by itself.
Troubleshooting
Upon noticing a problem, your first step should almost always be to recalibrate the actuator by toggling DIP 9
while the actuator is powered. This alone can solve basic problems.
If the actuator does not move, try following these steps:
1) Re-calibrate the actuator. This will move the actuator regardless of what signal it is receiving.
2) A sticking valve may be the problem. Remove the valve from the actuator, and re-test the actuator.
3) Remove power. Re-check the wiring and the power/signal apparatus. Power actuator, and re-
calibrate. If the problem persists, please call Hanbay for technical support.
